Lateral cleavage
Cleavage Cleav"age, n. 1. The act of cleaving or splitting. [1913 Webster]

2. (Crystallog.) The quality possessed by many crystallized substances of splitting readily in one or more definite directions, in which the cohesive attraction is a minimum, affording more or less smooth surfaces; the direction of the dividing plane; a fragment obtained by cleaving, as of a diamond. See {Parting}. [1913 Webster]

3. (Geol.) Division into lamin[ae], like slate, with the lamination not necessarily parallel to the plane of deposition; -- usually produced by pressure. [1913 Webster]

{Basal cleavage}, cleavage parallel to the base of a crystal, or to the plane of the lateral axes.

{Cell cleavage} (Biol.), multiplication of cells by fission. See {Segmentation}.

{Cubic cleavage}, cleavage parallel to the faces of a cube.

{Diagonal cleavage}, cleavage parallel to ta diagonal plane.

{Egg clavage}. (Biol.) See {Segmentation}.

{Lateral cleavage}, cleavage parallel to the lateral planes.

{Octahedral cleavage}, {Dodecahedral cleavage}, or {Rhombohedral cleavage}, cleavage parallel to the faces of an octahedron, dodecahedron, or rhombohedron.

{Prismatic cleavage}, cleavage parallel to a vertical prism. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Lateral cleavage — Lateral Lat er*al, a. [L. lateralis, fr. latus, lateris, side: cf. F. lat[ e]ral.] 1. Of or pertaining to the sides; as, the lateral walls of a house; the lateral branches of a tree. [1913 Webster] 2. (Anat.) Lying at, or extending toward, the… …   The Collaborative International Dictionary of English

  • Cleavage — Cleav age, n. 1. The act of cleaving or splitting. [1913 Webster] 2. (Crystallog.) The quality possessed by many crystallized substances of splitting readily in one or more definite directions, in which the cohesive attraction is a minimum,… …   The Collaborative International Dictionary of English

  • Lateral — Lat er*al, a. [L. lateralis, fr. latus, lateris, side: cf. F. lat[ e]ral.] 1. Of or pertaining to the sides; as, the lateral walls of a house; the lateral branches of a tree. [1913 Webster] 2. (Anat.) Lying at, or extending toward, the side; away …   The Collaborative International Dictionary of English

  • Lateral equation — Lateral Lat er*al, a. [L. lateralis, fr. latus, lateris, side: cf. F. lat[ e]ral.] 1. Of or pertaining to the sides; as, the lateral walls of a house; the lateral branches of a tree. [1913 Webster] 2. (Anat.) Lying at, or extending toward, the… …   The Collaborative International Dictionary of English

  • Lateral line — Lateral Lat er*al, a. [L. lateralis, fr. latus, lateris, side: cf. F. lat[ e]ral.] 1. Of or pertaining to the sides; as, the lateral walls of a house; the lateral branches of a tree. [1913 Webster] 2. (Anat.) Lying at, or extending toward, the… …   The Collaborative International Dictionary of English

  • Lateral pressure — Lateral Lat er*al, a. [L. lateralis, fr. latus, lateris, side: cf. F. lat[ e]ral.] 1. Of or pertaining to the sides; as, the lateral walls of a house; the lateral branches of a tree. [1913 Webster] 2. (Anat.) Lying at, or extending toward, the… …   The Collaborative International Dictionary of English

  • Lateral strength — Lateral Lat er*al, a. [L. lateralis, fr. latus, lateris, side: cf. F. lat[ e]ral.] 1. Of or pertaining to the sides; as, the lateral walls of a house; the lateral branches of a tree. [1913 Webster] 2. (Anat.) Lying at, or extending toward, the… …   The Collaborative International Dictionary of English

  • Lateral system — Lateral Lat er*al, a. [L. lateralis, fr. latus, lateris, side: cf. F. lat[ e]ral.] 1. Of or pertaining to the sides; as, the lateral walls of a house; the lateral branches of a tree. [1913 Webster] 2. (Anat.) Lying at, or extending toward, the… …   The Collaborative International Dictionary of English

  • Cleavage (embryo) — In embryology, cleavage is the division of cells in the early embryo. The zygotes of many species undergo rapid cell cycles with no significant growth, producing a cluster of cells the same size as the original zygote. The different cells derived …   Wikipedia

  • Cleavage (breasts) — A woman s cleavage Cleavage, anatomically known as the intramammary cleft, is the space between a woman s breasts lying over the sternum. Cleavage is exposed by a garment with a low neckline, such as ball gowns, evening gowns, swimwear, casual… …   Wikipedia

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